Patent US1420046A successfully refreshed from Google Patents.
US1420046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating liquids
Assignee: TITLE GUARANTEE AND TRUST Co
•
Filing: 1920-06-17
•
Granted: 1922-06-20
•
Expires: 1940-06-17
Abstract
No abstract record available.
Inventors
- 👤 David G Macgregor
- 👤 George B Millen
- 👤 John C W Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:59
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/78; Y; Y10; Y10S; Y10S261/00; Y10S261/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1925-06-19 | 1925-12-19 | 1926-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-06-19 | 1929-12-19 | 1930-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-06-19 | 1933-12-19 | 1934-06-20 | $7700.00 | Window Closed / Lapsed |